#include <windows.h>


LRESULT CALLBACK MainWindowCallBack(
   HWND   hwnd,
   UINT   uMsg,
   WPARAM wParam,
   LPARAM lParam
				     )

{
  LRESULT Result =0;

 switch(uMsg)
 {

 case WM_SIZE:
  {
   OutputDebugStringA("WM_SIZE\n");
  }break;


 case WM_DESTROY:
  {
   OutputDebugStringA("WM_DESTROY\n");
  }break;


 case WM_CLOSE:
  {
   OutputDebugStringA("WM_CLOSE");
  }break;


 case WM_ACTIVATEAPP:
  {
   OutputDebugStringA("WM_ACTIVATEAPP");
  }break;
 case WM_PAINT:
   {  PAINTSTRUCT Paint;
    HDC DeviceContext=BeginPaint(   hwnd,   &Paint    );
    int X=Paint.rcPaint.left;
    int Y=Paint.rcPaint.top;
    int Height= Paint.rcPaint.bottom - Paint.rcPaint.top;
    int width =Paint.rcPaint.right - Paint.rcPaint.left;

    PatBlt( DeviceContext,X,Y,Height,width,WHITENESS );
    EndPaint( hwnd, &Paint);
    }

 default:
  {
    Result= DefWindowProc(hwnd,uMsg,wParam,lParam);
    //  OutputDebugStringA("Default\n");
  } break;

 }

 return(Result);
}


int CALLBACK WinMain(
  HINSTANCE hInstance,
  HINSTANCE hPrevInstance,
  LPSTR     lpCmdLine,
  int       nShowCmd
)
{

  WNDCLASSA WindowClass ={};

   WindowClass.style=CS_OWNDC|CS_HREDRAW|CS_VREDRAW ;
   WindowClass.lpfnWndProc =MainWindowCallBack ;
   WindowClass.hInstance = hInstance;
   WindowClass.lpszClassName ="HandmadeHeroWindowClass" ;
   //WindowClass.hIcon

   if (RegisterClassA(&WindowClass))
     {
       HWND WindowHandle = CreateWindowExA(
        0,
        WindowClass.lpszClassName,
        "HandMade Hero",
        WS_OVERLAPPEDWINDOW|WS_VISIBLE,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        0,
        0,
        hInstance,
        0
		);
       if (WindowHandle)
	 {
	   for (;;)
	     {
	       MSG Message;
               BOOL MessageResult= GetMessage(&Message ,0 ,0,0);
               if(MessageResult>0)
                     {
                       TranslateMessage(&Message);
                       DispatchMessage(&Message);
                     }
               else
                   {
		     break;
                   }
              }
         }
          else
	   {
	     // todo(bill):logging
            }
     }
  else
       {
	 // todo(bill):Logging
       }

   return(0);

}